Pulling-over mechanism



Jan. 8, 1929. 1,697,983

J. T. LANCASTER PULLING ,QVER MEGHANISM Filed Dec.` 23, 1925 0 3F40ffw/i yllllllI/IIIIIIIIIIIL NVE/v ma r Patented Jan. 8, 1929.

u i g intese- JOHN T. LANCASTER, OF NEWTON, MASSACHUSETTS, ASSIGNORTO:UNITED "i SHOE MACHINERY COEPQRATGN, OF PATERSON, NEVJ JERSEYNA'CORPORATION ,OF NEW j j JERSEY.

PU'Ll'iIlT."Gr-OVERv MECHANSM. f l

Application filed December 23, 1925. Serial No. 77,277.

This invention relates to mechanism for use in the manufacture of bootsand 'shoes for l pulling uppers over lasts. Among its objects theinvention aims to provide simple, compactand convenientlyai'ranged meansfor operating upon an upper in different spaced locations about a shoein preparation for the driving ofthe fastenings for holding the upper inpulledover position, and isV herein shown as embodied in a plurality ofgripper and wiper units which present various novel features ofconstruction and arrangement for the purposes in view, ashereinaftermore particularly set forth. y f '1 A. more particular object of theinvention is to provide an organizationrof .such a character thattheupper-pulling means and the j upper-fastening means will have amplespace in which to perform'their respective operations without thenecessity of resorting to ,special design or to special movementsof oneor both of said means in order to avoid conflict between them. `For thepurposes in view, the 4construction herein shown comprises gripperswhichare so arranged as to extend outwardly from thelateral periphery ofthe shoe, instead of extending in directions substantiallyYperpendicular to the plane of the shoe bottom as common heretofore.

ySpace is thus afforded opposite tothe .bottom siderable distance fromthe field of operation of the grippers. The outwardly extendinggrippers, moreover, are arranged 4to be operated and controlled inrsuchmanner as to facilitate the introduction of the margin of the upperbetween the gripper jaws and to provide for the proper pulling of theupper over the last. As herein illustrated,each gripper is arranged togripthe margin of the: upper in a plane substantially parallel to theplane of the shoe bottom. and is independently mounted for upper-pullingmovement about an axis which is located at a considerable distanceoutwardly from the shoe beyond the gripper jaws so that the effectivepulling movement of the jaws is in a direction substantiallyperpendicular to the plane of the shoe bottom. To permit the margin ofythe upper to be readily inserted between the gripper jaws, the latterare arranged to present initiallyian upper-receiving opening whichshoe,and as herein shown the gripping of the upper is eifected by closingmovement of` that aw only which grips the upper on the outer face of thelatter, so that in closing the tendency is to tighten the upper over thelast in lpreparation for the subsequent pulling there'- `after describedfor wiping the upperinwardly over the bottom of the last. To accomplishy*effectively the objects in view, theidift'erent gripper jaws in theconstruction shown yare arranged to be controlled independently'ofeachother in respect to their closing and opening movements. n

ln accordance with a further featureof the invention there is provided anovel combinationiof means for gripping and pulling the upper'and forwipingv its'margin inwardly over the bottom 'of the shoe. As' hereinshown, each gripper, arranged as hereinbefore described to grip theupper in a plane substantially parallel to the plane of the shoe bottom,is provided with means extending in substantially parallel-relation tothe plane'in which the upper isgripped for wiping the margin inwardlyafter Vthe upper-ptlling operation. Moreparticularly, the constructionshown comprises a wiper 'pivotally mounted on thatjaw of the gripper4which grips the upper onits outer face, this wiper being operative towipe the upper inwardly in response to longitudinal movement ofthegripper. The position of thewiperis thus determined by that gripper jawon which the wiper is mounted, by reason of which it isdesirable thatthe release of the upper be 'effected by movement of the v'other jaw inthe manner above explained.'

The invention further provides a novel construction andv arrangement ofmeans for pulling the upper and for wiping it over the lateral peripheryof the last toward theedge i of the shoe bottom, i. e., for upwiping theupper. In its embodiment of this feature the construction showncomprises a4 Wiper combined with each gripper tomove therewith as unitin theupper-pulling operation, this wiper being movable lengthwise ofthegripfv per toward and from the shoe and arranged to serve after theVupwiping operation to clamp the upper adjacent to the edge of the shoebottom during the overwiping and up- 1 per-fastening operations.

The above and other features of the invention, including various noveldetalls of construction and combinations of parts, will 1 now be moreparticularly described by refer- .enc'e to the accompanying drawings andpointed out in the claims.

In the drawings, Fig. 1 is a plan view, with parts in section,

showing a-gripper and wiper unit construct- Y ed in accordance wit-h thepresent-invention and illustrating the relationof the unit toshoe-positioning and upper-fastening mechanisms in a machine in whichthe shoeis positioned with its toe pointing vertically' uprFigs. 2, 3and 4 are views similar to Fig. 1,

'illustrating different successive positions of the parts 1n operatingupon a shoe; and

Fig. 5 shows in rear elevation a group of units of the characterillustrated in Fig. 1,

, positioned in different locations about a. shoe.

For positioning the last with its shoe mate- 'rials including the upperand thesole or insole (herein referred to generically as the soleregardless of the type of shoe), any suitable means` may beutilized,fthe construction shown comprising a sole rest 1() such as isshown and described in detail in my copending application, Ser. No.77,276 led on December 23, l1925. As herein illustrated, the

arrangement is. such that-the shoe is positioned With its toe pointingvertically upward so as to present the top of the forepart convenientlywithin view of the operator of the machine,'although the invention isnot lim'- ited to an organization in which the -shoe is positioned inthis particular manner. For

'pulling the upper and for wiping it into a position to be fastened tothe sole, it is conl templated that there will be utilized a plu- "theshoe, these different units being substantially identical inconstruction except as to width.

.The construction of one of the gripper vand wiperunits is shown indetail in F ig. 1. For gripping and pulling the upperV there are.provided cio-operating gripper jaws 12 and 14 n arranged to engage theupper respectively uponthe outer and inner surfaoesof the latter. Boththe gripper aws are pivbtally mounted at 16 on a gripper bar 18 which ismovable lengthwise in directions toward and from the vmatters of designand vided a yoke which is pivotally connected to the gripper bar 18 atthe opposite sid-es of the latter and is operated 'by a member' 32 towhich the yoke is pivotally connected at 34 so as to permit longitudinalmovements of the gripper in response to rvthe action of the slide 22.

The gripper jaws 'l2 and 14 are movable independently of each otherabout the pivot 16 and are independently controlled with respect to suchmovements by separate operating connections. For this purpose there isslldably mounted 1n the gripper bar 18a rod 36 which is connected by alink 38 to the grip?" )er `aw 12 so that swino'inCr movements of 7 D c vthis jaw toward and from the other jaw are effected by movementslof therod 36. For

`controlling the j aw 14 there is provided a red 40 which extends alongone side of the bar 18 through the yoke 30,r ,It will be understood thatthe rods 36 and 40, and likewise theother connections herein ,describedfor imparting the various movements to the different operatinginstrument-alities, are to be connected to suitable mechanical means.for operating them in the required time relation to one another, suchoperating means not being illustrated, since the details thereofaremerely Yferm no part of the present invention.

In accordance with one of the objects of the present invention, thegripper is' utilized after the pulling of the upper to wipe the marginof the upper inwardly over the sole. To this end, there is pivotallymounted on the gripper jaw 12 a wiper 42 which has its inner endslightly upturned to assist in guiding it over the shoe bottom, thiswiper being free to rock to a limited extent on the grip-V per jaw aboutan axis extending laterally of the jaw to permit it to apply asubstantially uniform wiping pressure across the margin of the upper.`v`It will be understood that the gripper Y receives its longitudinalwip-ing movement from the slide 22 when the latter is operated by thebell crank 26. l

Combined with the gripper there is further provided a. device forengaging the upperupon the lateral. periphery of the last and for wipingthe upper heightwise of the last to the edge of theV last bottom. Thisdevice comprises a slide or wiper 44 which is mounted adjacent tothegripper bar 18 fandisguided by a lateral extension- 46 on:

the bar, the wiper having 'at its inner end a yfacing or pad 48ofyieldable material for engagement with. the shoe. `It will thus beseen that the wiper 46 and the gripper are moved as a unit heightwise ofthe shoe by the action of the member 32. Movement of .the wiper 44lengthwise of theA bar 18 to carry it into and out of engagement withthe slice is effected by means ot a link 50 con- .'nected 4to suit-ableoperating mechanism'.

For fastening the'upper after it hasbeen .wipedinwardly over the sole,there may be z conveniently utilized tacking mechanism of the sainecharacter asithat shown and de scribed in. my copending applicationhere- .inbei'ore mentioned, although the .invention is not dependentyupon the use of fastening means of any particular character.- Fasteningmechanisml such as shown in said co- .pending application comprises aplurality of .tack holdersor tubes with tack drivers therein, the tubesand thed'rivers being positioned opposite to the bcttomof the shoe andmoved lengthwise toward'. the shoe and then operated to drive the tacksafter theoverwiping operation. For illustrative purposes a single t-acktube 52 and its tack driverv 54 are shown in the drawings. rlhe numberof such t-acking devices willdependon the number or' points atfwhichit'is'desired to fasten the upper, the drawings illustrating anarrangement whereby three tacks aredriven at leach side ot' the forepartot the shoe and a single tack at the end of the toe. The arrangement issuch that thetacks are drive-ii Vthrough that gripper jaw which is neXtto the bottom of the shoe and through the wiper mounted thereon, the jawand thev wiper being provided with slots, indicated bydotted lines at 56in Fig. 5, top permit thetacks to be driven. For supporting the shoeagainst the pressure of the overwiping and fastening means there isprovided ashoe restv58.

In the operation of a. machine provided with upper-pullingA and wipingmeans such .as above. described the shoe is-presented in 'the positionillustrated in Fig.` 1,- the gripper .jaws v12 and 14 being arranged topresent at that time a comparatively wide opening l oppositeto thelateral periphery of t-he shoe Y to permit lthe upper to be readilyinserted between them. It will be observed that, as the jaws are thuspositioned, the upper-engaging `iace ot' the jaw 14 extends in a generaldirection substantially parallel to the` shoe bottom. The gripping. oiethe upper is preferably effected by. swinging movement of the jaw 12only, in response to the action of the)r v rod 36, while the opposite jaw 14 is held stationary by its rod'` 40. 1n this manner the jaw'12tends to tighten, the upper over the4 y last as it swings heightwise`ofthe shoe into' position/to grip the margin oi the `upper against thejaw 14. Afterthe margin -oi' the upper has thus been grippedin a planesubstantially parallel to the plane of the shoe bottom, the pulling ofthe upper isefi'ected by swinging `movement of the gripper about member.32. It will be observed that `the pivot 20. about whichthe gripperswings is located at a considerable distance farther loutwardly from theshoe than the gripper jaws and substantially in vthe plane of the shoebottom, so

that the'effective pulling movementot'the jaws .is in a directionsubstantially yperpendicular to the plane Vof the shoe bottom.

After'the margin of the gupper has ybeen gripped by the gripper jaws,and it maybe after the jaws have begun their pulling movement, the wiper44 is moved vinwardlyinto enf gageinent with .the upper on the lateralperelease the upper is preferably effectedv when .the gripper and wiperunit .has arrived substantially ory nearlyy at vtheend of itsoperativemovement heightwise of 'the slice. lhen the gripper and wiperunit hasthus arrived at the 'end of its movement, the gripper jaw .y 12and therwiper 42 are in position to beginv the overwipiiig operation. vReleaseof the vupper by the gripper is effected' by swinging move-ment ofthejaw14 only, this jaw being swung outwardly far enough to be clear ofthe tacking mechanism when the latter is operated todrivethe tacks.

. After: the gripper has releasedthe upper,

the overwiping operation is effected Vby longitudinal movement ofthegripper in'response to the action of the slide 22, the gripper aw` 12being held at thistime by' its voperating connections in position tobring effective wiping .pressure to bear upon the upper through thewiper42. During `this.overwiping operation .the wiper .44 remains in positionto actas a clamp to assist in holding the upper on t-he lateralperiphery' of the last. At the .end of the overwiping operation thetacking mechanism is moved toward the bottom of the shoe and the tacksare driven. Thereafter the various parts of the machine are returned totheir starting positions and the shoe is released. f

y'It will* be observed that since the gripper and'wiper units arearranged to radiate outwardly fromv the shoe in directions transverse tothe lateral periphery of the shoe and, as

herein shown, in .directions substantially. parits pivot 20 in responseto the action of' the i'io ' allel to the plane of thefshoe bottom,there is i ed independently for swinging movement 'j heightwise of theshoe to pull the upper.

afforded ample space opposite to the bottom of they shoe for theupper-fastening mechanism to be permanently positioned Vand operated ata considerable distancefrom the field of operation of the grippers, sothat the organization does not present any special problems resultingfrom dangerv of possible conflict between the grippers and theupper-fastening devices. Y

IVhile the invention is herein illustrated by Vreference to anorganization comprising gripper and lwiper units substantiallyident-ical in construction for operating upon the upper at the endandat' the opposite sides of the shoe,

the invention is not thus limited, and references in the claims to aplurality of grippers or of gripper and wiper units are not intended asdefinitions of an organization in which all of the grippers or ofthe`gripper and wiper units that are utilized are necessarily constructed asset forth.

Having described the invention, what I claim as new and desire tosecure'by Letters Patent of the United States is 1. In mechanism oftheclassdescribed, the combination with shoe-positioning means, of alplurality ofy grippers lfor pulling the upper respectively in diiferentspaced locations about the shoe, said grippers being arranged to radiateoutwardly from the shoe in directions substantially parallel to theplane of the shoe bottom and each being pivotally mount- `2. Inmechanism of the class described, the

combination with shoe-positioning means, of

a plurality of grippers for pulling the upper respectively in diierentspaced locations about the shoe, said grippers extending outwardly indirections transverse to the lateral periphery of the shoe and eachbeingindependently mounted for upper pulling move? ment heightwise ofthe shoe about an aXis located farther outwardly from the lateral pej iriphery ofthe shoe than its upper-engaging portion. y Y

3. In mechanism of the class described, the combination withshoe-positioning means, of a plurality of grippers for pulling` theupper respectively in different` spaced locations about the shoe, eachof .said grippers being pivotally mounted independently for upperpullingmovement heightwise of the shoe about an axis located substantially inAthe plane of the shoe bottom and farther outward- I v ly from the shoethan its upper-engagingpor-` tion.

4, In mechanism of the class described, the combination withshoe-positioning means, of a plurality of grippers for pulling the upperrespectively in different yspaced locations about the shoe, saidgrippers beingarranged vto radiate outwardly from the portions of thelateral periphery of the shoe where they engage the upper and each.comprising a pair of jaws for gripping the Vupper in a planesuhstantially parallel to the plane of t-he shoe bottom throughout theupper-pulling opera.-

.tion.

1 5. In mechanism of the class described, the Y combination withshoe-positioning means, of

a plurality of grippers for pulling the upper respectively in differentspaced locations the shoe bottom, each pair of jaws being independentlymounted for upper-pulling movement heightwise of the `shoe about an axislocated farther outwardly from the shoe than said jaws.

6. In mechanism of the class described, the combination withlshoe-positioning means, of a plurality of grippers for pulling theupper respectively lin different spaced locations about'the shoe, eachof said grippers comprising a pair of jaws each mounted to swing towardand from the other and separately controlled in respect .tosuch-swinging f i movements. j

7 In the mechinism ofthe class described, the combination withshoe-positioning means,.of a plurality of Vgrippers for pulling theupper respectively in. different yspaced locations about the shoe, eachof said grippers comprising a pair of jaws separately controlled inrespect to vopening and closing movements and arranged to grip the upperin a plane substantially parallel to the plane of the shoe bottom. v

8. In mechanism ofthe class described, the combination withshoe-positioning means, of a plurality of grippers for pulling theAupper respectively in diderent spaced Vlocations about the shoe, saidgrippers being arranged to radiate outwardly from t-he lateral.periphery of the shoe and each comprising a pair lof separatelycontrolled aws each mounted to swing toward and from the other and bothmounted to swing as a unit heightwise of the shoe to pull the upper.

9. In mechanism of the class described, the 1' i of a plurality ofgrippersfor pulling` the upper respectively in differentspaced'locations about the shoe, each of said grippers comprisplane ofthe shoe bottomafi id means for pre.

senting that jaw which-` engages the inner tace of theupper in anupper-receiving positionun which its upperfengaging;tace issubstantially parallel to'theplane. o't-he. shoe bottomz and it'oreiecting they gripping of the upper'by movement/of the 'other jaw.

12. In mechanism ot' the class: described, the combinationwithshoe-positioning means,

` of a plurality of'grippers 'or. pulling the upper respectively indifferent spacedy locations aboutthegshoe, each otfsaid gripperscomprising a pairot jaws arranged. to be independently controlledviinrespect-toV openingand closing movements, 'and'. means; forv effectingfthe gripping ot' the upper by movement oone of said jaws and foreffecting the release of the upper by movement of the other 13. Inmechanism oit the class described, the combination with shoe-positioningmeans, of a plurality ot grip-pers for pulling the upper respectively indifferent spaced locations about the shoe, each of said gripperscomprising a pair oi jaws arranged to grip the upper in a planesubstantially parallel to the plane .of the shoe bottom, and means foreiecting the gripping oi the upper by movement of that jaw onlythatengages the outer face of the upper and for effecting the release of theupper by movement of the other jaw only.

14. In mechanism of the class described, the combination withshoe-positioning means, of a plurality of grippers tor pulling the upperrespectively in different spaced locations about the shoe, each of saidgripperscomprising a pair of jaws arranged to grip the upper in a planesubstantially parallel to the plane ot the shoe bottom and havingthereon means for wiping the upper inwardly over the bottom ot the shoein locations only' where the pulling ot the upper takes place.

15. In mechanism of the yclass described,

the combination with shoe-positioning means,

of a plurality of gripperstor pullingtheup.- per respectivelyin'ditlerent spacedlocations l about the shoe, ,each otsaidgripperscompris ing a p air of jaws anran'ged-.to gripftheaippei; inyaplanesubstantially parallel tothe. plane of the shoe bottom, and awipenmounted 0n one of: the jaws of eachl gripperon-the oppositeside from itsupper-grippingtace'and-.of substantially thesame extent lengthwise ofthe edge oftheupper assaid gripping face for wiping the upper inwardly,overthefbot# tom ot the shoe. .i i 17. Inmechanism'oftheclassjdescribed,rthe combination with? shoe-positioningmeans,V of a plurality of grippers forpullingthefupper. respectively indifferent spaced?. locations about the shoe, each of said: grippers.having wipingmeans thereon and beng-mountedfor swinging'movement to pulltlieupperand-for rectilinear movementgto wipe theaupperingwardly overthebottom of the-shoe:

18. In mechanism'ofthe class describedtle combination withshoe-positioningmeans, of a plurality of grippers arranged t0 radiateoutwardly, from the lateral. periphery offt'he shoe for pulling the.upper respectively,P in dinerent spaced locations about',y the shoe andeach comprising a pair ofjawstorfgr-ipping the upper ina planesubstantially.. parallel to' the planev ofl the. shoe bottom eachio saidgrippers having.r wiping means..` thereonI and being mounted forswinging movement heightwise of the shoe to p-ull the upper and forlongitudinal movement to wipe the upper inwardly overfthe bottom of theshoe.l

19. In mechanism of the lclass described, the combination withshoe-positioning means,

of a plurality of grippers arranged to radiate outwardly Jfrom thelateral periphery of the shoe for pulling the upper respectively indiierent spaced locations about the shoe and lub each comprising a pairof upper-gripping jaws, one of the jaws of each of said grippers havingthereon wiping means for wiping the upper inwardly over thebottom of theshoe llll in response to inward movement of said jaw over the shoe andprovided with an opening through which a fastening 4may be driven forholding the upper.

20. In mechanismof the class described, the combination withshoe-positioning means, of a plurality of gripper land'wiper units foroperating respectively in diierent spaced vlocations about theshoe,'each ot said units being movable heightwise of they shoev to pullthe upper and including a wiper arranged toengage the upper on theVlateral periphery of the shoe and to wipeit toward the edge of the shoebottom in the operative movement of` of the shoe bottomand eachcomprising aY gripper for pulling the upper and a wiper for wiping theupper heightwise'of the shoe to- Vward the edge ofthe shoe bottom.

22. In mechanism of the class described, the combination withshoe-positioning means, of aplurality of gripper and wiper units foroperating respectively in different spaced locations about theshoe, eachof said unitsy comprising a gripper arranged to extend outwardly fromthe lateral periphery of the shoe and a wiper movablelongitudinally ofsaid gripper into engagement with the upper ad-v jacentto the gripperfor wiping t-he 'upper heightwise of the shoe.

" 23." In mechanism of the class described, the combination withshoe-positioning means, of a plurality of gripper and wiper units forop- "erating respectively in diiferent spaced locations-.about the shoe,each of said. units comprising agripper arranged to grip thefupper in aplane substantially parallel to the'plane of the shoe bottom and movableheight-wise of the shoe to pull the upper and a wiper movable with saidgripper to upwipe the upper.

24. In mechanism of the class described, the combination withshoe-positioning means, of ay plurality-.of gripper and wiper units foroperating respectively in diferent spaced loprising an, upper-pullinggripper having Y means thereon for wiping the upper inwardly overthebottom of the shoe and also comprising a wiper forwiping the upper`over the lateral periphery of the shoe. Y.

,- 26.- In mechanism of the class described, the` combination withshoe-positioning means, of a plurality of gripper and wiper units forop-l erating respectively in dierent spaced locations about the shoe,each of said units comprising a gripper movable heightwise of the shoeto pull the -upper and having thereon means for subsequently wiping theupperinwardly over the bottom of the `shoeand comprising also a wiperarranged to engage the upper on the lateral periphery of the shoe andmovable with the gripper to upwipe the upper in the .upper-pullingoperation.

LANCASTER.

' In testimony whereof 4I have signed my name to this specification.JOI-IN T.

